What Happens When You Visit An Internet Website
Below is a MRR and PLR article in category Internet Business -> subcategory Web Hosting.
What Happens When You Visit a Website?
Understanding the Magic Behind the Scenes
Every time you enter a web address into your browser or click a link, you're initiating an intricate process that brings a webpage to your screen. Here’s a simple breakdown of how it works.
The Role of HTTP
When you request a webpage, the Hyper Text Transfer Protocol (HTTP) handles your request. This protocol is part of the Internet Protocol (IP) suite, enabling your browser, the "client," to connect with the server hosting the website. The server listens on TCP port 80, waiting for incoming requests.
TCP: The Data Exchange Facilitator
The Transmission Control Protocol (TCP) is responsible for creating connections that allow computers to exchange data. It identifies the requesting computer and ensures the data is transmitted correctly to its destination.
How Requests Are Processed
Numerous TCP ports serve different purposes. For instance, TCP Port 21 is used for FTP, while Port 80 is typically for HTTP. When a server receives a specific request string on TCP port 80, it responds based on the availability of the requested page.
A typical request might look like this:
```
GET /faq.html HTTP/1.1
Host: http://www.mywebsite.com
```
This requests the "faq" page from "mywebsite". If the page is available, the server responds with:
```
HTTP/1.1 200 OK
Date: Mon, 12 Oct 2005 22:38:34 GMT
Server: Apache/1.3.27 (Unix)
Last-Modified: Wed, 08 Jan 2003 23:11:55 GMT
```
Data Transmission
The response "HTTP/1.1 200 OK" indicates the page is available. If not, you might see a "404" error, meaning the page wasn’t found. Available pages are sent via TCP in data packets, each with headers specifying their destination and order.
Packets may travel different routes to their destination. Routers facilitate this by polling nearby routers; if one is unavailable, the connection reroutes, ensuring swift delivery.
Receiving and Assembling Data
Upon reaching your browser, the data packets trigger an acknowledgment to the server. This confirmation ensures all packets are received properly; if not, the server retransmits them. TCP verifies that the data is undamaged.
Once all packets arrive, your browser reassembles them using sequence numbers. Voilà! The webpage displays on your screen, typically in seconds.
Understanding these processes showcases the complexity behind the seemingly simple task of visiting a website.
You can find the original non-AI version of this article here: What Happens When You Visit An Internet Website .
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